Given the task definition and input, reply with output. In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

The Greek Orthodox Church of Antioch , also known as the Antiochian Orthodox Church and legally as the Greek Orthodox Patriarchate of Antioch and All the East , is an autocephalous Greek Orthodox Church within the wider communion of Eastern Orthodox Christianity .

The Greek Orthodox Church of Antioch is a group of Christians .